Gang,
I am having a strange NPE. The code is;
Property<Integer> slicesProperty = config.configuration().slices();
if( slicesProperty == null )
{
slices = 10;
}
else
{
slices = slicesProperty.get();
}
and I get NPE on slices=slicesProperty.get();
I have -Dqi4j.compacttrace=off
And the NPE stack trace is still as simple as it gets;
Caused by: java.lang.NullPointerException
at
org.qi4j.entitystore.file.FileEntityStoreMixin.activate(FileEntityStoreMixin.java:98)
at org.qi4j.runtime.composite.MixinModel.activate(MixinModel.java:316)
at
org.qi4j.runtime.composite.AbstractMixinsModel.activate(AbstractMixinsModel.java:294)
at org.qi4j.runtime.service.ServiceModel.activate(ServiceModel.java:338)
at
org.qi4j.runtime.service.ServiceInstance.activate(ServiceInstance.java:48)
Now, if I singlestep, the get() (goes to EntityPropertyInstance) is
invoked, completed (and returns null) and the debugger comes back to
my "slices=slicesProperty.get()" line, and when stepping again, the
NPE happens.
>From the JVM's point of view, I doubt that this can happen. So what is
going on?? Rickard, is there some kind of ASM trick going on to
delegate the assignment elsewhere, or what?
Cheers
--
Niclas Hedhman, Software Developer
http://www.qi4j.org - New Energy for Java
I live here; http://tinyurl.com/2qq9er
I work here; http://tinyurl.com/2ymelc
I relax here; http://tinyurl.com/2cgsug
_______________________________________________
qi4j-dev mailing list
[email protected]
http://lists.ops4j.org/mailman/listinfo/qi4j-dev
